28186371

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 42000816

約数和(自身を除く): 13814445

約数列:

[1, 3, 9, 43, 129, 173, 387, 421, 519, 1263, 1557, 3789, 7439, 18103, 22317, 54309, 66951, 72833, 162927, 218499, 655497, 3131819, 9395457, 28186371]

約数ペア:

[(1, 28186371), (3, 9395457), (9, 3131819), (43, 655497), (129, 218499), (173, 162927), (387, 72833), (421, 66951), (519, 54309), (1263, 22317), (1557, 18103), (3789, 7439)]